Plan of the Great Drain at fork in Section Ζ ... Charles S. Spector ... Dirty Cartridge Paper Drafting Ink ... 1933
Plan of section Z in 1933; with Tholos trenches of 1937 ... f Fragile Stained Abraded Repaired Gauzed Graph Paper Drafting Ink Pencil ... 1933
Plan of section Z in 1933; late walls ... f Fragile Repaired Gauzed Graph Paper Drafting Ink Pencil ... 1933
Plan of sections Ζ and Δ: Detail of Building D, archaic walls at lower level ... Charles S.Spector ... f Fragile Distored Faint Cartridge Paper Pencil ... 1933
